Physics

Replies / Views	Last post
What evidence do we have that the chromosphere is hotter than the photosphere? What will be an ... Started by sam.t96	3 Replies 122 Views	Jul 27, 2018 by iceage
What is the solar wind, and how does it affect objects in the solar system? What will be an ideal ... Started by Diane	1 Replies 130 Views	Jul 27, 2018 by Joc
What evidence do we have that the sunspots are magnetic? What will be an ideal ... Started by j.rubin	1 Replies 61 Views	Jul 27, 2018 by nickk12214
What is the Babcock model? What will be an ideal response? ... Started by c0205847	1 Replies 49 Views	Jul 27, 2018 by AISCAMPING
What effects does solar activity have on Earth? What will be an ideal ... Started by Brittanyd9008	3 Replies 76 Views	Jul 27, 2018 by sierramartinez
How did measurements of neutrinos from the Sun pose a problem for modern astronomy and how was it ... Started by ishan	1 Replies 84 Views	Jul 27, 2018 by Ksh22
Discuss a theory that explains how the corona is heated. What will be an ideal ... Started by roselinechinyere27m	1 Replies 60 Views	Jul 27, 2018 by Kjones0604
List and explain the four fundamental forces in nature. What will be an ideal ... Started by jayhills49	1 Replies 63 Views	Jul 27, 2018 by gcook
Explain how a photon is generated in the core of the Sun and how it is transported out from the Sun. ... Started by corkyiscool3328	3 Replies 42 Views	Jul 27, 2018 by orangecrush
Draw all zones and layers of the Sun from the interior through the atmospheres and beyond, if ... Started by vinney12	1 Replies 45 Views	Jul 27, 2018 by zogaridan
The hydrogen lines in spectral type A stars a. are most narrow for supergiants. b. are most ... Started by dalyningkenk	1 Replies 84 Views	Jul 27, 2018 by batool
Parallax would be easier to measure if a. Earth's orbit was larger. b. the stars were farther ... Started by rmenurse	1 Replies 168 Views	Jul 27, 2018 by dudman123
Absolute visual magnitude is a. the apparent magnitude of a star observed from Earth. b. the ... Started by D2AR0N	3 Replies 88 Views	Jul 27, 2018 by snackralk
A star's luminosity depends only on the star's a. distance and diameter. b. temperature and ... Started by mpobi80	1 Replies 73 Views	Jul 27, 2018 by hramirez205
In an H-R diagram, stars with the smallest radius are found in the _________ of the diagram. a. ... Started by pane00	1 Replies 84 Views	Jul 27, 2018 by chinwesucks
In the H-R diagram, roughly 80 percent of all stars are a. in the giant region. b. in the ... Started by magmichele12	1 Replies 183 Views	Jul 27, 2018 by k.lashomb
We know that giant stars are larger in diameter than the Sun because a. they are more luminous ... Started by clmills979	3 Replies 101 Views	Jul 27, 2018 by chloejackso
Red giant stars are I. more luminous than the Sun. II. larger in diameter than the Sun. III. cooler ... Started by 09madisonrousseau09	1 Replies 280 Views	Jul 27, 2018 by Bigfoot1984
The ________ of a star is a measure of the total energy radiated by the star in one second. a. ... Started by serike	1 Replies 132 Views	Jul 27, 2018 by otokexnaru
The most common stars are a. supergiants. b. giants. c. upper (more luminous) main-sequence ... Started by charchew	1 Replies 122 Views	Jul 27, 2018 by CharlieArnold
The star named Sheat is of M2 II spectral type and luminosity class. Based on this information, ... Started by go.lag	3 Replies 148 Views	Jul 27, 2018 by 1_Step_At_ATime
The star named Circini has the spectral type and luminosity class of O 8.5 V. Based on this ... Started by plus1	1 Replies 143 Views	Jul 27, 2018 by Alyson.hiatt@yahoo.com
To determine the orbital period of a visual binary, we must measure a. brightness. b. position ... Started by leo leo	1 Replies 123 Views	Jul 27, 2018 by ErinKing
In a binary system, the more massive star a. is at the center of mass. b. is farthest from the ... Started by michelleunicorn	1 Replies 79 Views	Jul 27, 2018 by tdewitt
The total mass of the pair of stars in spectroscopic binaries are difficult to estimate because ... Started by charchew	3 Replies 93 Views	Jul 27, 2018 by chevyboi1976